The utility model discloses a nuclear power plant's master -control room structure, it includes the master -control room, relieve room and visit room, the master -control room has adopted the furred ceiling of falling the infundibulate at the top of central core operating area to backing glass fiber paper and the cotton micropunch aluminium veneer of centrifugal glass have been adopted at wall all around. Compared with the prior art, the utility model discloses nuclear power plant's master -control room structure has introduced micropunch aluminium veneer wall and the furred ceiling of falling the infundibulate, has enlarged the interior sound absorbing material's of master -control room effective area and has inhaled the sound performance, has greatly reduced the background noise of master -control room environment.